csky: Fixup ioremap function losing

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Implement the following apis to meet usage in different scenarios.

 - ioremap          (NonCache + StrongOrder)
 - ioremap_nocache  (NonCache + StrongOrder)
 - ioremap_wc       (NonCache + WeakOrder  )
 - ioremap_cache    (   Cache + WeakOrder  )

Also change flag VM_ALLOC to VM_IOREMAP in get_vm_area_caller.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>

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Guo Ren 2019-08-15 16:24:56 +08:00

parent ae76f635d4

commit 5336c17928

2 changed files with 29 additions and 17 deletions

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23

arch/csky/include/asm/io.h

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23

arch/csky/mm/ioremap.c

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